Article
Chemistry, Organic
Lin Tang, Ge Lv, Ya Fu, Xue-Ping Chang, Ruimin Cheng, Lingling Wang, Qiuju Zhou
Summary: This article presents a simple and efficient DBU-promoted Heck-type alkene perfluoroalkylation under visible light irradiation. The reactions proceed smoothly via a radical process in the absence of an additional photocatalyst, using DBU as both a halogen bond acceptor and a base. Various perfluoroalkylated alkenes are obtained in satisfactory yields under mild conditions.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Energy & Fuels
Hoang Chinh Nguyen, Thanh Truc Pham, Nguyen Phuong Nguyen, Beyene Hagos Aregawi, Chun-Chong Fu, Colin J. Barrow, Chia-Hung Su, Shao-Jung Wu, Horng-Yi Juan
Summary: This study developed a new approach involving DBU-catalyzed one-pot reaction to produce biodiesel with enhanced reaction efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Shijie Xu, Fan Yang, Hui Fan, Xuechun Zhao, Yao Xu, Shuo Wang, Xiaoxiang Zhang
Summary: A simple and novel metal-free reduction method using DBU as both solvent and reducing reagent is reported for converting azides to amines, with aromatic and sulfonyl azides giving desired products in moderate to excellent yields. The transformation demonstrates good functional group tolerance and high chemo-selectivity.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Crystallography
Eric D. Fussell, Ampofo Darko
Summary: This article describes the synthesis and structural characterization of rhodium(II) carboxylate complexes, including two DBU adducts with similar attributes revealed by single-crystal X-ray diffraction analysis. Compound 1 crystallized with solvent molecules showing intermolecular interactions, while compound 2 lacked solvent and exhibited weak intramolecular interactions. UV-vis spectroscopy was conducted on both adducts in various solvents to study band shifts.
Article
Materials Science, Multidisciplinary
Shinichi Hata, Yuya Yamaguchi, Riku Nakata, Koudai Kametani, Yukou Du, Yukihide Shiraishi, Naoki Toshima
Summary: The study reports the preparation and thermoelectric properties of double-doped thermoelectric materials drop-cast carbon nanotube (CNT) films. Doping with DBU superbase and electron-donating PAMAM can enhance the chemical stability and power output of CNTs, while prolonging the stability of n-type behavior. This new type of thermoelectric material provides a new avenue for the development of atmospherically stable n-type CNT films.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Physical
Ceren Orak, Asli Yuksel
Summary: Hydrogen is produced from a DBU model solution using different solar-driven hybrid photocatalysts. Graphene supported LaFeO3 is found to be the most promising catalyst. Experimental results show that GLFO achieves higher hydrogen amounts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Alessandro Triolo, Annalisa Paolone, Angelo Sarra, Francesco Trequattrini, Oriele Palumbo, Giovanni BattistaAppetecchi, Fabrizio Lo Celso, Philip Chater, Olga Russina
Summary: The chemical and physical properties as well as the structural features of a Protic Ionic Liquid (PIL) formed by neutralization of a super-strong base with a super-strong acid have been investigated in this study. The role of hydrogen bonding (HB) in affecting the morphology of the PIL has been highlighted, and a comparison between HB features in this PIL and related PILs has been presented. Differences in HB interaction have been observed and explained based on the geometrical properties of the main conformers contributing to the experimental spectra.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Maoxin Li, Wenyan Chen, Wenxing Chen, Shichang Chen
Summary: Poly(ethyleneterephthalate) (PET) is effectively degraded to obtain bis(hydroxyethyl)terephthalate (BHET) using deep eutectic solvents (DESs) based on 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) due to their high activity, low price, and accessible production properties. Under optimized reaction conditions, PET bottle flakes were completely degraded with a BHET yield of 83%. The formation of hydrogen bonds between ethylene glycol (EG) and DES, as well as between PET and DES, promotes glycolysis of PET, facilitating the attack of hydroxyl oxygen in EG on the carbonyl carbon in PET.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Muhammad Imran, Huaiman Cao, Jianzhang Zhao, Gloria Mazzone
Summary: In this study, the photophysical properties of a heavy atom-free organic chromophore with near-IR absorption and intersystem crossing ability were investigated. The compound consisting of naphthalenediimide and pentacyclic1,8-diazabicyclo[5.4.0]-undec-7-ene showed strong charge-transfer absorption in the near-IR region, but had poor intersystem crossing efficiency despite its twisted molecular structure.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Chemistry, Physical
Tatsuya Umecky, Yoshinori Kamesaki, Shogo Tanaka, Toshiyuki Takamuku, Takashi Makino, Mitsuhiro Kanakubo
Summary: The absorption and desorption behaviors of CO2 in DBU-alcohol solutions are influenced by the alkyl group and DBU concentration. The solubility of CO2 is almost the same at 298.2 K, but varies with DBU concentration. The desorption of CO2 is significantly affected by the alkyl group and DBU concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Multidisciplinary
In-Sik Son, Beodl Hwang, Sang-Eun Chun
Summary: Porous carbon can be commercialized as a filter material based on its sorption ability. Mesoporous carbon was fabricated through the pyrolysis of PVDF to create a porous material for microparticle filtration. By suppressing micropore evolution through defluorination process, the carbon synthesized had a lower specific surface area and mainly consisted of mesopores.
KOREAN JOURNAL OF METALS AND MATERIALS
(2021)
Article
Biotechnology & Applied Microbiology
Pingping Zhao, Xiaoxin Wang, Qiang Wang, Lianzheng Zhang, Dongmei Xu, Jun Gao
Summary: A series of ionic liquid (IL) extractants were developed for the removal of sulfides from fuels. The ILs, synthesized with functionalized 1,8-diazabicyclo[5.4.0]undecano-7-ene (DBU) cations and large volume difluoromethane sulfonimide (NTf2) anion, showed good performance in removing benzothiophene (BT), thiophene (TH), and dibenzothiophene (DBT) in model oil.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Polymer Science
Yang Chen, Jie Zhang, Wenhao Xiao, Anfu Chen, Zhixian Dong, Jinbao Xu, Wenhua Xu, Caihong Lei
Summary: 8-Diazabicyclo[5.4.0]undec-7-ene (DBU) was successfully used as an organocatalyst for the ring-opening polymerization (ROP) of epsilon-caprolactone (CL) with benzyl alcohol (BnOH) initiator, leading to well-designed PCLs with a controlled/living polymerization character. Functional initiators were used to obtain end-functionalized PCLs and successfully proceed with block copolymerization of CL with other monomers. Additionally, the reaction mechanism was studied through DFT calculations and NMR measurements.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Chemistry, Organic
Zhang Xiaoyong, Yu Lili, Gao Junfang, Gong Yue, Zhao Yulong
Summary: A new reaction method has been developed using DBU to promote the reaction between diazo compounds and nitroalkanes, leading to the construction of functionalized hydrazones and tetrahydropyridazines with the structure feature of nitroalkanes. The reaction involves the simultaneous creation of multiple stereocenters using readily available starting materials.
CHINESE JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Syed Nasir Shah, Mansoor Ul Hassan Shah, Mohamed Ibrahim Abdul Mutalib, Kallidanthiyil Chellappan Lethesh, Jean-Marc Leveque, Nehar Ullah, Humbul Suleman
Summary: This study investigated the impact of ultrasonic parameters on naphthenic acid extraction using different ILs, and the system was optimized for maximum extraction. The IL 1,8-diazobicyclo[5.4.0]-undec-7-ene (DBU) with thiocyanate anions showed the highest efficiency in extracting naphthenic acid. Additionally, the influence of the cation chain length on the extraction efficiency was evaluated, and thermodynamic models were employed to investigate the interaction parameters.
Article
Chemistry, Organic
Mengru Li, Fushun Liang
TETRAHEDRON LETTERS
(2016)
Article
Chemistry, Organic
Yueju Li, Fushun Liang
TETRAHEDRON LETTERS
(2016)
Article
Chemistry, Organic
Rui Wang, Wei Guan, Zheng-Bo Han, Fushun Liang, Takeo Suga, Xihe Bi, Hiroyuki Nishide
Article
Chemistry, Organic
Xia Liu, Xin Zhao, Fushun Liang, Baoyi Ren
ORGANIC & BIOMOLECULAR CHEMISTRY
(2018)
Article
Chemistry, Multidisciplinary
Shuai Tian, Huili Ma, Xuan Wang, Anqi Lv, Huifang Shi, Yun Geng, Jie Li, Fushun Liang, Zhong-Min Su, Zhongfu An, Wei Huang
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Organic
Rui Wang, Lili Wang, Qin Xu, Bao-Yi Ren, Fushun Liang
Article
Chemistry, Multidisciplinary
Xiangming Wang, Zepeng Wang, Hua Feng, Chongyang Lin, Huifang Shi, Zhongfu An, Zhong-Min Su, Fu-Shun Liang
Summary: The room-temperature phosphorescence of 1,8-naphthalimide can be activated by doping it into aromatic dicarboxylic acids. The doping system generates a bright yellow afterglow, and a phosphorescent lifetime of 403 ms and a quantum yield of 4.2% can be achieved with 0.02 mol% doping content of 1,8-naphthalimide and isophthalic acid. Both energy transfer from the host to the guest and the formation of an intermolecular hydrogen-bonding network contribute to the efficient and long-lived phosphorescence observed.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Organic
Rui Wang, Kai-jun Xie, Qiang Fu, Min Wu, Gao-feng Pan, Da-wei Lou, Fu-Shun Liang
Summary: A visible-light-promoted atomic substitution reaction has been developed for transforming thiocacids into carboxylic acids using DMSO as the oxygen source, resulting in over 90% yields of various alkyl and aryl carboxylic acids. The reaction proceeds smoothly through the photochemical reactivity of the formed hydrogen-bonding adduct between thioacids and DMSO.
Review
Chemistry, Applied
Xiangming Wang, Mengjiao Dong, Zijuan Li, Zepeng Wang, Fu-Shun Liang
Summary: Recently, the research on organic room-temperature phosphorescent materials (ORTP) and organic long persistent luminescence (OLPL) has gained significant attention in the fields of chemistry and material science. Although there have been many reports on high-efficiency ORTP and OLPL achieved through organic small molecule doping systems, the lack of clear molecular design principles and understanding of complex doping mechanisms hinders further development and practical applications. This mini-review summarizes the recent progress in ORTP and OLPL achieved through the doping system of organic small molecules, emphasizing the relationship between molecular structure and luminescent performance, and presents the current challenges and prospects for future development in this field.
Review
Chemistry, Multidisciplinary
Zepeng Wang, Xiaojie Cheng, Yingjie Xie, Shulin Liu, Mengjiao Dong, Jianfeng Zhao, Fushun Liang, Zhongfu An, Wei Huang
Summary: This review summarizes recent work on organic phosphorescence of heterocycles with boron, sulfur, and phosphorus heteroatoms and highlights the significance of the guidelines for constructing efficient phosphorescence molecules.
Article
Chemistry, Physical
Yingxiao Mu, Fu-Shun Liang, Zijuan Li, Liyun Liao, Xiangming Wang, Yanping Huo, Zhong-Min Su
Summary: Host-guest doping systems using phthalimides (BI) and N-methylphthalimide (NMeBI) as hosts, and 1,8naphthalimide (NI) and 4-bromo-1,8-naphthalimide (4BrNI) as guests, were developed. The system with a strong C=O···H-N hydrogen bond between 0.2% NI/BI (molar ratio) exhibited a higher phosphorescence quantum efficiency (29.2%) than that of NI/NMeBI with a weak C=O···H-C hydrogen bond (10.1%). A similar trend was observed in the 4BrNI guest system. The 0.5% 4BrNI/BI composite achieved a remarkable phosphorescent efficiency of 42.1%, which represents the highest value in NI-based phosphors. This research suggests that stronger hydrogen bonding may contribute more to boosting phosphorescence efficiency.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Huiqin Xu, Jia Li, Lin Liu, Fu-Shun Liang, Zheng-Bo Han
Summary: Three isostructural MOF materials with triangular bipyramid cages and segmented one-dimensional channels were developed using the pore space partition strategy. Among them, Co-DOBDC-TPB exhibited the highest CO2 uptake capacity and good CO2/N-2 and CO2/CH4 selectivity. Additionally, Co-DOBDC-TPB showed exceptional desorption within 10 minutes. These materials may have potential applications in flue gas and natural gas purification.
INORGANIC CHEMISTRY
(2023)
Article
Optics
Zijuan Li, Liyun Liao, Shulin Liu, Yingxiao Mu, Yanping Huo, Fu-Shun Liang
Summary: In this study, 8-naphthylimide (NI) was doped in polyvinyl alcohol (PVA) or polyacrylic acid (PAA) matrices (0.2%, mass ratio) to achieve persistent room-temperature phosphorescence (pRTP). The pRTP is attributed to the formation of a rigid environment constructed by abundant hydrogen bonds. Additionally, color-tunable persistent luminescence of RB@NI@PVA and RB@NI@PAA doped films was successfully achieved through phosphorescent resonance energy transfer strategy, utilizing the overlap between NI's phosphorescent emission and Rhodamine B's absorption.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Organic
Shulin Liu, Rui Wang, Bo Zhu, Wei Guan, Fushun Liang
ORGANIC & BIOMOLECULAR CHEMISTRY
(2019)
Article
Chemistry, Organic
Qiang Fu, Rui Wang, Fushun Liang, Wei Guan
ORGANIC & BIOMOLECULAR CHEMISTRY
(2018)